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PCF7936AS Datasheet(PDF) 28 Page - NXP Semiconductors

No. de pieza PCF7936AS
Descripción Electrónicos  Security Transponder (HITAG2)
PDF  32 Pages
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
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PCF7936AS Datasheet(HTML) 28 Page - NXP Semiconductors

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NXP Semiconductors
Product Specification
Security Transponder (HITAG2)
PCF7936AS
2010 May 04
28
CONFIDENTIAL
10.2 Timing Characteristics
Tamb = -40 to +85°C, fSYS = 125kHz, TO = 1/fSYS. Unless otherwise specified
SYMBOL
PARAMETER
CONDITION
MIN
TYP
MAX
UNIT
Command Handling
tWAIT,Tr
Transponder response delay
199
206
TO
tWAIT,Bs
Basestation response delay
90
TO
tPROG
EEPROM erase/write time
615
TO
tIDLE
Idle time
80
ms
Data Transmission
TBIT
Bit duration
32
TO
TWRP
Write pulse width
Note 1
4
10
TO
TLOG_0
Write pulse repetition time, logic 0
18
22
TO
TLOG_1
Write pulse repetition time, logic 1
26
32
TO
TSTOP
Write pulse length, stop condition
36
TO
LF Field Power On Reset, Note 2
tSTART
Transponder initialization time
BFIELD = 35μT
80
μs
tINIT
Transponder initialization time
225
TO
tRESET,SETUP LF Field Power On Reset setup time
BFIELD = 100μT
5
ms
Read Only Mode
tWAIT,SA
Timeout for START_AUTH command
320
TO
tWAIT,RO
Read Only Mode startup delay
Note 3
326
TO
Notes
1. As detected by the transponder interface demodulator. The corresponding LF Field write pulse width applied by the
basestation depends on the resonance circuit properties and actual system coupling factor.
2. Characterized with the Scemtech test equipment STM-1 in a Helmholtz arrangement according to section 11.
3. Total delay (Tinit + Twait,RO) = 551 T0



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